National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fog/Mist

34°F

1°C

Humidity 97%
Wind Speed S 8 mph
Barometer 30.06 in (1018.1 mb)
Dewpoint 33°F (1°C)
Visibility 5.00 mi
Wind Chill27°F (-3°C)
Last update 17 Feb 6:56 pm EST
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 29. Light west wind.

    Low: 29 °F

    Patchy Fog

  • Wednesday

    Wednesday: A chance of rain before 2pm, then snow between 2pm and 4pm, then rain and snow after 4pm. Patchy fog before 10am. High near 36. West wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 36 °F

    Slight Chance
    Rain and
    Patchy Fog
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all snow after 9pm. Low around 30. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Rain/Snow
    then Snow
    Likely

  • Thursday

    Thursday: A slight chance of snow before 8am. Mostly sunny, with a high near 36. North wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow before 1pm, then rain likely. Mostly cloudy, with a high near 39. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 39 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Friday Night

    Friday Night: Rain and snow likely before 10pm, then snow. Low around 30. Northeast wind around 7 mph. Chance of precipitation is 80%.

    Low: 30 °F

    Rain/Snow
    then Snow
    Likely

  • Saturday

    Saturday: A chance of snow before 10am, then a chance of rain between 10am and 4pm. Mostly cloudy, with a high near 37. Northeast wind 3 to 8 mph. Chance of precipitation is 40%.

    High: 37 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27. Light northeast wind.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 29. Light west wind.
Wednesday
A chance of rain before 2pm, then snow between 2pm and 4pm, then rain and snow after 4pm. Patchy fog before 10am. High near 36. West wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Rain and snow, becoming all snow after 9pm. Low around 30. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Thursday
A slight chance of snow before 8am. Mostly sunny, with a high near 36. North wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 27. Calm wind.
Friday
A chance of snow before 1pm, then rain likely. Mostly cloudy, with a high near 39. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
Rain and snow likely before 10pm, then snow. Low around 30. Northeast wind around 7 mph. Chance of precipitation is 80%.
Saturday
A chance of snow before 10am, then a chance of rain between 10am and 4pm. Mostly cloudy, with a high near 37. Northeast wind 3 to 8 mph. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 27. Light northeast wind.
Sunday
A chance of snow after 11am. Mostly cloudy, with a high near 36. East wind 6 to 10 mph. Chance of precipitation is 40%.
Sunday Night
Snow likely. Cloudy, with a low around 27. Northeast wind 8 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Monday
A chance of snow. Mostly cloudy, with a high near 34. North wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 20. Northwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 31. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
12:24 pm EST Feb 17, 2026
Forecast Valid:
7pm EST Feb 17, 2026-6pm EST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation